Finding the Fourth Proportional to 74,769.46, 112,121.36 and 27,989.53
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Solution
The fourth proportional to 74,769.46, 112,121.36 and 27,989.53 is: 41,972.00
Step by Step Solution
- Step 1: Write the proportion equation
74,769.46 : 112,121.36 = 27,989.53 : x - Step 2: Convert to fraction form
74,769.46/112,121.36 = 27,989.53/x - Step 3: Cross multiply
74,769.46x = 112,121.36 × 27,989.53 - Step 4: Simplify right side
74,769.46x = 3,138,223,468.81 - Step 5: Solve for x
x = 3,138,223,468.81/74,769.46 - Step 6: Final answer
x = 41,972.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.